Internal-combustion engine



y 22, 1956 .1. KREMSER INTERNAL-COMBUSTION ENGINE I Filed July 31, 1953 FlG.2'

INVENTOR. Johann Kremser ATTORNEY L. ma

2,746,435 INTERNAL-COMBUSTIONENGINE Johann Kreinse r, Hannover, Germany- Application July 31, 1953, Serial No. 371,522

Claims priority, application Germany December 22, 1952 1,4 Claims. (Cl. 123-55 The present invention relates to a two-stroke cycle blower-scavenged internal combustion engine with, its cylinders being arranged in form of a V, which difiers from engines of this type known so far in that it is of a more suitable design and inthat it is self-contained. The design of the drive for the governor, the oil pump, and the blower is somewhat difficult, as the numerous necessary gears and transmissions complicate the construction of the engine and necessitates larger dimensions, which is of particular disadvantagein engines for motorvehicles. It is one object of the present invention to provide a two stroke cycle blower-scavenged internal combustion is journalled. which drives the oil pump as Well as the governor, and which is driven by the crankshaft, if necessary by means of an intermediate gear; and the drive gear mounted to the cam shaft may at the same time drive: the blower, whereby; further gear elements are eliminated.

I Itis another object of the present invention tojprovide' .a two-stroke cycle blower-scavenged internal combustion ice ber.

in and onejend of this can: shaft has a gear 10 keyed thereto whereas its opposite end is connected to a governor 11 for controlling the timing of the fuel injection by means ofthe meshing gears 12 and 13, said governor being disclosed in the copending application Serial 371,518, filed July 31, 1953. The governor 11 as Well as 1 the gears 12 and 13 are arranged within the chamber 7.

The crankshaft 14 ofthe engine has keyed-thereto a gear .15 and the latter is connected by an intermediate gear 16 to the gear 10 whereupon with rotation of the crank shaft l4-the cam shaft 9 will also be rotated. The shaft 17 of the blower has keyed thereto a gear 18 which.

latter also meshes with the gear of thecam shaft. Furthermore, housing parts 19 are connected to the tunnel 6, said housing parts receiving the plunge rs 20 for the injection pump 21. i

i All main parts of the engine are fitted to the housing? which encloses the scavenging receiver.

with the governor, the cam shaft and the pumps, so that it may be inserted between the banks of the V as a selfcontained unit.

iven b exam le onl and not in a limitin sense, the

, engine, in which inside the banks of the V a cam shaft g p y g scope of the present invention being determined by the objects and the claims.

Iclaim: I 1. A V-type two-cycle internal combustion engine comprising an engine block anda crankshaft supported in said engine block, ported engine cylinders mounted in V-formationfupon said engine block and, projecting there- .engine, in which the room defined between'the banks of the V forms the scavenging receiver, the cam shaft extending through said scavenging receiver, furthermore, the

Q governor being arranged in the scavengingreceiver, and

the blower being mounted o ntop ofsaid receiver. In-

accordance with the presentjlinvention, chambersor the like are provided in the scavengingreceiver for the cam from, said cylinders defining a substantially V-shaped space therebetween, a housing disposed within the said s'pace betweenthe said cylinders and secured to the said engine" block, and a scavenging receiver formed in said. housing and communicating [with said ported cylinder, chambers disposedv in said housing coordinated to said cylinders, a fuel pump mounted in each of said chambers,

shaft and the pump drive and, respectively, for the gov crnor with its drive. Thescavenging receiver comprises a housing part which exactly fits between the banks of the V- formed by the cylinders and is cast in one block with; the chambersfor the cam shaft, the pump drive and the governor. The tunnel for the cam shaft extending ing brackets at its ends.

through said scavenging receiver: is provided 'with bear Various embodiments in accordancej with this inven tion are possible. With these and other objects in view which will become apparent inthefollowing detailed description, the presentinvention will be clearly understood in connection with the accompanying" drawing, in which;

Figure 1 is a front 'elevational view of a blower-f scavenged two-stroke cycle internal combustion V- engine,

"partly in section; and

Fig '2 is a longitudinal sectional view thereof. e The two cylinders 2 and 2', as herein shown are arranged in the formof a V and are mounted upon the.

engine block 1. A housing 3 is also mounted upon the engine block, but arranged. between the cylinders 2 and 2 ofthe entire bank'of cylinders and has formedtherein a scavenging receiver 4. A blower 5- is mounted upon this housing 3. v e 4 Formed within this housing 3 is a tunnel 6 and a chama cam shaft supported within said housing for actuating ,eachof said fuel pumps, a blower disposed on top of .said housing and geared to said cam shaft and means for as set forth in claim 1, which'includes partition walls lformed in the said housing for receiving said cam shaft.

,3. The \l'-type two-cycle internal combustion .engineas set forth in claim 1, in which the said housing containing 1 said scavenging receiver with said cam shaft journalled therein,-,said fuel pumps, and said blower. forms a removable single aggregate suitable for removably mounting on the said engine block between said cylinders.

4. The V-type two-cycle internal combustion engine as set forth in claim 1, which includes a tunnel-shaped chamher and means for supporting said cam shaft insaid tunnel-shaped chamber.

References Cited in the file of this patent UNITED STATES PATENTS 1,173,105 Fekete Feb. 22, 1916 1,316,527 White ;Sept. 16, 1919 7 2,057,062 Schneider Oct. 13, 1936 2,091,370 Lichte Aug. 31, '1937 2,429,105 Paxman Oct. 14,1947

Pa'tented May 22, 1956 Bearing brackets 8 supported within the opposite ends of the tunnel 6 have a cam shaft 9 journalledthere- Before being fitted to the engine block said housing may be provided Paxman Oct. 14, 1947 

